BEYOND S12M-SDUCR11 Internal Boring Bar 12mm Shank CNC Lathe Turning Tool Holder Right Hand
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⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this tool holder body purchase. Product photography displaying an attached cutting insert is intended purely to illustrate spatial tool orientation, pocket seating, and application setups.
BEYOND S12M-SDUCR11 Heavy-Duty Internal Boring Bar & CNC Lathe Tool Holder
1. Product Overview
Engineers Search: "Which rigid 12mm right-hand boring bar matches with DCMT11T3 positive rake inserts to prevent deep-hole chatter during CNC internal profiling?"
The BEYOND S12M-SDUCR11 is a high-rigidity, screw-on internal boring bar engineered for high-performance right-hand (R) CNC lathe operations, internal turning, and precise inner profiling. Built from premium-grade, vacuum-hardened alloy steel, the robust 12mm shank diameter provides excellent torsional stiffness to prevent structural deflection during deep-reach roughing and finishing passes. This industrial tool holder allows highly accurate tool paths inside medium-to-small bore openings down to a minimum clearance diameter of 16mm. It features a precision-machined 55 degree pocket geometry designed to lock DCMT 11T3-- indexable carbide inserts (such as DCMT 11T304 or DCMT 11T308) completely flush, eliminating pocket wear under severe metal-cutting forces.
When paired with indexable inserts engineered with a positive clearance rake and optimized chipbreaker configurations, this tooling setup ensures superior chip evacuation. The geometric chipbreaker mechanics break long, stringy alloy swarf into tightly curled, segmented chips. This prevents hazardous chip nesting inside deep blind cavities, protecting the machined surface from scratching and ensuring high-precision dimensional tolerances.
2. Product Core Features
- Vacuum-Hardened Alloy Body: Heat-treated to HRC 42-45 to provide superior dampening against micro-harmonics during long-overhang deep boring.
- Rigid 12mm Heavy-Duty Shank: Maximizes cross-sectional mass to withstand high radial forces during heavy metal removal rates (MRR) within compact bores.
- 93 Degree Dynamic Lead Cutting Angle: Advanced profiling geometry allows fluid back-boring and facing while seamlessly guiding chip paths away from the workpiece wall.
- Industrial Anti-Galling Black Coat: Premium chemical blackening provides excellent rust resistance and prevents hot chips from welding to the tool body.
Model Nomenclature Decoder: S12M-SDUCR11
Steel Shank Body
12mm Shank Dia.
150mm Total Length
Screw Clamping System
55 Degree Diamond Shape
93 Degree Clearance Angle
7 Degree Relief Angle
Right Hand Orientation
11mm Insert Edge Size
Looking for the Mirrored Left-Hand (L) Tool Holder Unit to Balance Your Lathe Turret?
Explore the S12M-SDUCL11 (Left Hand) Tool Holder →3. Technical Specifications & Dimension Comparison
| Technical Parameter | Metric Specification (S12M-SDUCR11) | Imperial / Inch Equivalent Value |
|---|---|---|
| Shank Diameter | 12 mm | ~ 0.4724 inches (Closest standard: 1/2 inch shank profile / A08-SDUCR3) |
| Overall Length | 150 mm | ~ 5.9055 inches |
| Minimum Bore Clearance | 16 mm | ~ 0.6299 inches |
| Matching Insert Standard | DCMT 11T304 / DCMT 11T308 Index | DCMT 32.51 / DCMT 32.52 equivalent classes |
| Mounting Hardware | M4.0 Insert Locking Screw + T15 Torx Wrench | M4.0 High-Tensile Screw + T15 Flag Key |
Optimal Industrial Cutting Speed & Feed Recommendation
| ISO Workpiece Material Classification | Cutting Speed Range (Vc) | Feed Rate per Revolution Target (f) |
|---|---|---|
| Carbon / Alloy Steels (P-Class) | 120 - 200 m/min | 0.05 - 0.15 mm/rev |
| Stainless Steel Varieties (M-Class) | 70 - 140 m/min | 0.04 - 0.12 mm/rev |
| Cast Iron & Nodular Matrix (K-Class) | 80 - 160 m/min | 0.05 - 0.18 mm/rev |
4. Product Application Scenarios
- Compact Bore Internal Boring: The slim 12mm body core allows highly precise profiling into narrow inner channels without sacrificial bar rub.
- Precision Internal Profiling: Tailored for creating intricate internal shoulders, precision facings, and tapers in hydraulic valves and small manifolds.
- Finishing & Light Roughing Cavity Machining: Provides optimal rigidity values across standard overhang deployments up to 4xD depth settings inside small apertures.
5. Equipment & Tooling Compatibility
- CNC Turning Equipment: Mounts beautifully inside standard 12mm turret positions, compact split block sleeves, or boring bars sleeves.
- Tool Posts & Lathes: Universally ready for multi-station mini-lathe tool blocks, quick change tool components, or manual tool houses.
- Standard ISO Indexable Seats: Perfectly matches all international ISO-standard 55 degree positive DCMT 11T3-- indexable carbide geometries.
6. BEYOND Brand Grade Optimization Guide
Match your machining operations with the perfect premium BEYOND indexable carbide insert grade to maximize tool life:
| BEYOND Insert Grade | Substrate & PVD/CVD Coating Architecture | Ideal Application Material Focus |
|---|---|---|
| BYM11 (CVD Grade) | Thick Multilayer TiN + Al2O3 Heat Shield | Engineered for high-sfm continuous cutting cycles in structural carbon steels, tool steels, and structural alloys. |
| BYS25 (PVD Grade) | Nano-Structured TiAlN Wear-Resistant Coat | High thermal defense profile. Ideal for interrupted cuts, hard crust layers, and 304/316 stainless steel grades. |
| BYK15 (Uncoated Grade) | Mirror-Polished Fine Grain Carbide Substrate | Prevents built-up edge (BUE). Built for high-speed turned paths in aluminum alloys, brass, and polymers. |
7. Why Choose BEYOND CNC Tools?
BEYOND supplies world-class, high-mass tooling solutions built to excel under extreme machining parameters. By applying precision induction hardening across our mid-shank bars and maintaining strict quality control over our ground insert seats, we guarantee maximum component accuracy, lower cyclic vibration wear, and reduced downtime on your workshop floor.
Global Machinist Feedback
Mark S. — United States
"Perfect fit for my compact CNC lathe. The 12mm shank handles deep internal profiles in 1045 steel without any issues. Outstanding finish quality."
Jürgen W. — Germany
"Präzise verarbeitet. The insert seat pocket is clean and keeps the DCMT 11T3 firmly centered. Very reliable right-hand profiling."
Giovanni F. — Italy
"Utensile compatto e robusto. Great chip control inside narrow bores. Highly resistant to deflection under radial loads."
Kenji K. — Japan
"Small automatic lathes find this 12mm bar incredibly convenient. Torx lock holds perfectly under continuous cycles."
Lucas D. — France
"The alloy steel is top quality. Very minimal wear observed on the clamping seat after intensive batches."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the maximum stable boring overhang ratio for this 12mm steel tool body?
A1: For premium steel shank tool bodies, the recommended reliable overhang limit is up to 4x the shank diameter. For this 12mm bar, you can confidently bore up to an extended depth of 48mm before needing anti-vibration bars.
Q2: What is the minimum bore diameter this 12mm tool holder can enter?
A2: Due to the structural indexable head offset and clamping relief space, the absolute minimum entry bore clearance is 16mm. Running inside tighter spaces risks damaging the bar flank wall.
Q3: What does the "M" length indicator signify on this model?
A3: Under standard ISO coding conventions, the letter "M" designates an overall tool length of 150mm. This provides plenty of chucking area for compact CNC tool blocks and turret clamps.
9. Technical Maintenance & Diagnostic Guidelines
Equivalent Industry Models
Fully interchangeable with universal ISO metric standard catalog designation code S12M-SDUCR11. Serves as a high-strength drop-in replacement for any standard 12mm or 1/2 inch tool pocket configuration holding 55 degree positive diamond profiles.
Troubleshooting Tips
Workpiece Surface Scoring: Increase chip flow flushing by using internal coolant or step up feed rates slightly to trigger cleaner chip breaking operations.
Rapid Pocket Deflection: Inspect pocket seating for fine embedded debris. Clean and torque the high-tensile M4 screw to exactly 3.0-3.2 Nm for absolute rigidity.
Workpiece Material Matrix
Engineered to operate reliably across primary material categories: P (Alloy, Structural, Carbon Steels), M (Stainless Steel lines), K (Grey and Ductile Cast Irons), N (Aluminum and Non-ferrous lines), and S (High-temp heat-resistant alloys).
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.